If you wanted to be super precise about it, you could even used the amount you beat the parry by (plus two) to determine how far away the missile actually exploded! Personally I'd just plop it somewhere in the "nobody gets hurt but it looks super cool" range and move on with the game.

Yeah, people have been asking Will to make an RPG with detachable rockets for years now, and it comes and is more awesome than any of us had imagined. There was *some* kind of workaround involving drilling into the RPG, I think it even actually fired via spring or similar, but this is so much cooler.